Abstract: Techniques are disclosed for reducing macrosegregation in cast metals. Techniques include providing an eductor nozzle capable of increasing mixing in the fluid region of an ingot being cast. Techniques also include providing a non-contacting flow control device to mix and/or apply pressure to the molten metal that is being introduced to the mold cavity. The non-contacting flow control device can be permanent magnet or electromagnet based. Techniques additionally can include actively cooling and mixing the molten metal before introducing the molten metal to the mold cavity.

Abstract: There is provided a molding device for continuous casting equipped with an agitator that reduces the amount of generated heat, is easy to carry out maintenance, is inexpensive, and is easy to use in practice. The molding device for continuous casting equipped with an agitator of the invention receives liquid-phase melt of a conductive material, and a solid-phase cast product is taken out from the molding device through the cooling of the melt. The molding device includes a casting mold and an agitator provided so as to correspond to the casting mold. The casting mold includes a casting space that includes an inlet and an outlet at a central portion of a substantially cylindrical side wall, and a magnetic field generation device receiving chamber that is formed in the side wall and is positioned outside the casting space. The casting mold receives the liquid-phase melt from the inlet into the casting space and discharges the solid-phase cast product from the outlet through the cooling in the casting space.

Abstract: The present application relates to a molten metal transfer pump in which a spiral flow channel is formed by a cylindrical body and a spiral body received in the cylindrical body while being fixed and which allows molten metal to swirl in the spiral flow channel by using Lorentz force generated by a current that flows in a longitudinal direction in molten metal in the cylindrical body and a lateral magnetic field that is generated by a permanent magnet provided on the outer periphery of the cylindrical body.

Abstract: To provide a technique that reliably and quickly melts conductive metal, there is provided a conductive metal melting method including: rotating a magnetic field device formed of a permanent magnet, which includes a permanent magnet, about a vertical axis near a driving flow channel of a flow channel that includes an inlet through which conductive molten metal flows into the flow channel from the outside and an outlet through which the molten metal is discharged to the outside and includes a vortex chamber provided between the driving flow channel provided on an upstream side and an outflow channel provided on a downstream side, and moving lines of magnetic force of the permanent magnet while the lines of magnetic force of the permanent magnet pass through the molten metal present in the driving flow channel; allowing the molten metal to flow into the vortex chamber by an electromagnetic force generated with the movement to generate the vortex of the molten metal in the vortex chamber into which the raw mater

Abstract: A permanent magnet-type molten metal stirring device includes: a support body that can suppress heat transfer from molten metal; a magnetic field unit provided above the support body and including a permanent magnet allowing magnetic force lines to vertically extend in the molten metal; and a drive unit provided below the support body and driving the molten metal with an electromagnetic force generated by the magnetic force lines and current allowed to flow through the molten metal by the drive unit. The drive unit includes: a cylindrical drive main body mounted on a lower portion of the support body and including a passage formed therein and laterally extending in a longitudinal direction, and a pair of electrodes provided at positions opposed to each other along a width direction via the passage, the pair of electrodes allowing current intersecting the magnetic lines of force in the molten metal.

Abstract: A method of driving conductive molten metal and a melting furnace, the method including making direct current flow vertically between a first electrode, and applying a magnetic field radially toward the center of a melting chamber from the outside of the melting furnace or toward the outside of the melting furnace from the center of the melting chamber to apply torque. The method further includes rotating the molten metal by the torque to discharge the molten metal to a holding furnace, which is provided on the melting chamber, from an outlet opening of a partition plate provided between the melting chamber and the holding furnace and to suck the molten metal, which is present in the holding furnace, from an inlet opening of the partition plate.

Abstract: The invention provides a method of processing green coffee beans that improves the aromas and flavors of green coffee beans through simple means, allowing richly fragrant green coffee beans that have unique aromas to be obtained with ease. A method of processing green coffee beans includes a fermentation process by bringing green coffee beans, which are unground seeds from coffee berries, microorganisms, and nutritive substances that are metabolized by the microorganisms into contact with one another to cause fermentation, followed by a separation process of separating out only said green coffee beans that have passed through the fermentation process.

Abstract: [Object] There are provided a manufacturing method and a manufacturing apparatus that obtain a high-quality conductive metal sheet in a short time. [Solution] The invention includes: applying a magnetic field to the raw material or the pre-product in a thickness direction by a magnetic field unit including permanent magnets; making alternating current flow in at least one of the raw material and molten metal of the pre-product so that the alternating current intersects the magnetic field in at least the front and the rear of a lengthwise direction of the magnetic field unit; and applying vibration to at least one of the raw material and the molten metal of the pre-product by an electromagnetic force generated due to the intersection to modify the molten metal and form the conductive metal sheet in which all of the molten metal is solidified.

Abstract: [Problem] There are provided an efficient molten metal stirring device and an efficient molten metal transfer device. [Solution] There are provided an efficient molten metal stirring device and an efficient molten metal transfer device, which device is adapted to stir or transfer molten metal by a resultant driving force of a first electromagnetic force and a second electromagnetic force according to Fleming's rule. The first electromagnetic force is caused by eddy currents generated in the molten metal using magnetic lines of force generated from a rotating permanent magnet, and the second electromagnetic force according to Fleming's rule is generated by the intersection between the magnetic lines of force and a current that flows between a pair of electrodes provided in advance.

Abstract: A melt circulating drive device mounted on a side wall of a main bath and driven to agitate nonferrous metal melt present in a melt storage room storing nonferrous metal melt of the main bath. The melt circulating drive device includes a melt drive tank, a melt drive unit, and a partition plate. The melt drive tank includes a hermetically-sealed drive chamber including an opening allowing the drive chamber to communicate with the melt storage room, and the melt drive tank stores melt, which flows from the opening, in the drive chamber. The melt drive unit includes a permanent magnet unit rotated about a first up and down axis while making magnetic lines of force up and down pass through the melt, and a drive unit for the permanent magnet unit that rotates the melt, about the first up and down axis by rotationally driving the permanent magnet unit.

Abstract: The agitator includes a furnace body that includes a molten metal room, and an agitating unit that agitates molten metal stored in the furnace body. The agitating unit includes a molten-metal driving room-forming part that applies a driving force to the molten metal, and forms a driving room of which both ends are opened; a pair of electrodes that is disposed in the driving room and makes current flow in the driving room under the presence of the molten metal; and a magnetic field unit which is formed of a permanent magnet disposed outside the furnace body, of which one pole of an N pole and an S pole faces the furnace body so that magnetic lines of force generated from the one pole cross the current, and which generates an electromagnetic three for driving the molten metal from one end toward the other end in the driving room.

Abstract: A permanent magnet-type molten metal stirring device includes: a support body that can suppress heat transfer from molten metal; a magnetic field unit provided above the support body and including a permanent magnet allowing magnetic force lines to vertically extend in the molten metal; and a drive unit provided below the support body and driving the molten metal with an electromagnetic force generated by the magnetic force lines and current allowed to flow through the molten metal by the drive unit. The drive unit includes: a cylindrical drive main body mounted on a lower portion of the support body and including a passage formed therein and laterally extending in a longitudinal direction, and a pair of electrodes provided at positions opposed to each other along a width direction via the passage, the pair of electrodes allowing current intersecting the magnetic lines of force in the molten metal.

Abstract: A metal melting furnace includes: a furnace body including a storage space storing molten metal; a vortex chamber body including a vortex chamber communicating with the storage space, the vortex chamber body including a partition plate serving as a drop weir uprightly formed inside the vortex chamber, the partition plate disposed at a communication side with respect to the storage space in the vortex chamber so that the longitudinal direction of the partition plate follows the communication direction and divides the communication side to form first and second vortex chamber openings positioned at both sides of the partition plate and communicating with both the storage space and the vortex chamber; and a molten metal whirling gap formed between a front end portion of the partition plate positioned inside of the vortex chamber in the longitudinal direction and an inner wall of the vortex chamber body facing the front end portion.

Abstract: A metal melting furnace vortex chamber body having a vortex chamber capable of communicating with a storage space of a furnace body having the storage space storing molten metal. The metal melting furnace vortex chamber body has a drop weir part which switches a communication state and an interruption state between the storage space and the vortex chamber. The drop weir part includes a blind drop weir and an opening type drop weir which are formed as separate members. At least the blind drop weir is movable up and down with respect to the vortex chamber body and is selectively positioned at an upward movement position and a downward movement position so as to switch the communication state and the interruption state.

Abstract: A molding device includes a mold that forms a casting by cooling received melt, and a stirring unit that applies a magnetic field to the melt in the mold and allows a current to flow in the melt. The mold forms a vertical casting space that includes an inlet into which the melt flows and an outlet from which a product is taken. A transition plate is disposed at the mold space inlet. The melt can flow into the casting space from a hole in the transition plate. The stirring unit includes a magnetic field unit making lines of magnetic force vertically run into the casting space, and a first electrode at the inlet side and a second electrode at the outlet side that can flow current through the melt in the casting space, and generate an electromagnetic force by making the flowing current cross the lines of magnetic force.

Abstract: There is provided a molding device for continuous casting equipped with an agitator that reduces the amount of generated heat, is easy to carry out maintenance, is inexpensive, and is easy to use in practice. The molding device for continuous casting equipped with an agitator of the invention receives liquid-phase melt of a conductive material, and a solid-phase cast product is taken out from the molding device through the cooling of the melt. The molding device includes a casting mold and an agitator provided so as to correspond to the casting mold. The casting mold includes a casting space that includes an inlet and an outlet at a central portion of a substantially cylindrical side wall, and a magnetic field generation device receiving chamber that is formed in the side wall and is positioned outside the casting space. The casting mold receives the liquid-phase melt from the inlet into the casting space and discharges the solid-phase cast product from the outlet through the cooling in the casting space.

Abstract: A melt circulating drive device mounted on a side wall of a main bath and driven to agitate nonferrous metal melt present in a melt storage room storing nonferrous metal melt of the main bath. The melt circulating drive device includes a melt drive tank, a melt drive unit, and a partition plate. The melt drive tank includes a hermetically-sealed drive chamber including an opening allowing the drive chamber to communicate with the melt storage room, and the melt drive tank stores melt, which flows from the opening, in the drive chamber. The melt drive unit includes a permanent magnet unit rotated about a first up and down axis while making magnetic lines of force up and down pass through the melt, and a drive unit for the permanent magnet unit that rotates the melt, about the first up and down axis by rotationally driving the permanent magnet unit.

Abstract: A molding device includes a mold that forms a casting by cooling received melt, and a stirring unit that applies a magnetic field to the melt in the mold and allows a current to flow in the melt. The mold forms a vertical casting space that includes an inlet into which the melt flows and an outlet from which a product is taken. A transition plate is disposed at the mold space inlet. The melt can flow into the casting space from a hole in the transition plate. The stirring unit includes a magnetic field unit making lines of magnetic force vertically run into the casting space, and a first electrode at the inlet side and a second electrode at the outlet side that can flow current through the melt in the casting space, and generate an electromagnetic force by making the flowing current cross the lines of magnetic force.

Abstract: A metal melting furnace includes: a furnace body including a storage space storing molten metal; a vortex chamber body including a vortex chamber communicating with the storage space, the vortex chamber body including a partition plate serving as a drop weir uprightly formed inside the vortex chamber, the partition plate disposed at a communication side with respect to the storage space in the vortex chamber so that the longitudinal direction of the partition plate follows the communication direction and divides the communication side to form first and second vortex chamber openings positioned at both sides of the partition plate and communicating with both the storage space and the vortex chamber; and a molten metal whirling gap formed between a front end portion of the partition plate positioned inside of the vortex chamber in the longitudinal direction and an inner wall of the vortex chamber body facing the front end portion.

Abstract: A metal melting furnace includes: a furnace body which includes a storage space storing molten metal; a vortex chamber body which includes a vortex chamber capable of communicating with the storage space of the furnace body; and a drop weir part which changes a communication state and an interruption state between the storage space and the vortex chamber, wherein the drop weir part includes a blind drop weir and an opening type drop weir which are formed as separate members, wherein at least the blind drop weir is movable up and down with respect to the vortex chamber body and is selectively positioned at an upward movement position and a downward movement position so as to switch the communication state and the interruption state, and wherein the opening type drop weir includes notches which communicate the vortex chamber and the storage space with each other in the communication state.